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Vitamin D in chronic heart failure.
1Section of Ageing and Health, Centre for Cardiovascular and Lung Biology, Division of Medical Sciences, University of Dundee, Ninewells Hospital, Dundee DD1 9SY, Scotland, UK, m.witham@dundee.ac.uk.
Current Heart Failure Reports
|February 18, 2011
Summary
Vitamin D may influence heart failure, but current evidence does not support supplementation. Further research is needed to determine if higher doses can improve outcomes for heart failure patients.
Area of Science:
- Cardiology and Nutritional Science
Background:
- Heart failure pathophysiology may be influenced by vitamin D.
- Low vitamin D levels are prevalent in heart failure patients and linked to poorer outcomes.
- Mechanisms include effects on the renin-angiotensin system, calcium handling, and inflammation.
Purpose of the Study:
- To review the potential role of vitamin D in heart failure.
- To assess current evidence on vitamin D supplementation in heart failure.
Main Methods:
- Review of recent evidence and observational data.
- Analysis of existing interventional trial data.
Main Results:
- Observational studies link low vitamin D to worse exercise capacity and higher natriuretic peptide levels in heart failure.
- Current interventional data do not support vitamin D supplementation for heart failure.
Conclusions:
- While vitamin D has plausible beneficial mechanisms in heart failure, current evidence does not support its routine supplementation.
- Further large-scale, long-term studies are required to evaluate the efficacy of higher-dose vitamin D in reducing heart failure symptoms, hospitalizations, and mortality.
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